Update openai module compiler plugin to support generate API calls when the openai import is not present in the file#22

SasinduDilshara merged 5 commits intoballerina-platform:mainballerina-platform/module-ballerinax-ai.openai:mainfrom

SasinduDilshara:fix-8126SasinduDilshara/module-ballerinax-ai.openai:fix-8126Copy head branch name to clipboard